Perforator.



PatentedJuly 3|, |900. f G. A. EVANS.

lPERI-'oRAToR (Applicatinn mod Har. 28, 1900.1

(N0 Model.)

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To n//Z whom t may concern.-

d I UNrrnD lSTATES l PATENT Genion.-

GUSTAVUS ALFRED EVANS, OF NELSON, CANADA.

PERFQRATOR.

sPEoIFIoATmN forming 1.1m of Letters Patent No. 654,963, dated .rely31,- ieoo.

Application filed Marek 28, 1900. Serial No. 10,544. (No model.) y

Be it known that I, GUsTAvUs ALFRED EVANS, a citizen of the UnitedStates, residing in Nelson, in the Province of British Columbia andDominion Vof Canada, have in# Vented a new and Improved Berforator, `ofwhich the following is a full, clear, and exact description.

The invention relates to printing-presses; and its object is to providea new and improved perforator which is sim pleand durable inconstruction, very effective in operation, and arranged to perforate thepaper While the impression is being made to insure a proper registrationof the punches and perforations in the bed-piece and to cause a properrelease of the l perforated paper from the punches when the perforatoropens.

Theinvention consists ofnovel features and parts and combinations of thesame, as will be fully described hereinafter and then pointed ont in'the claims.

A practical embodiment of my invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a reduced view of the improvement as applied. Fig. 2 is asectional side elevation of the improvement. Fig. 3 is a plan View ofthe bed-piece, and Fig. 4. is an inverted plan view of the punch-bar.

The improved perforator consists, essentially, of the bed-piece A andthe punch-bar B, of which the bed-piece is formed at its ends withangular lugs A', adapted to engage the top and bottom edges ofthe platenC of the printing-press, as indicated in Fig. 1, so that the bedpiece Aextends over the face of the platen near one edge thereof. Set-screws Dengage the lugs A and screw in the platen, so as to securely hold theperi'orator in place on the platen.

The bed-piece Ais provided at its top with a row of perforations A2,opening at their in ner ends into a recess or opening A3, formed on theunder side of the bed-piece, openings A4 leadingfrom the ends of thechannel to the face of the bed-plate, as indicated in the drawings. Thischannel A8 serves to receive the disks cut out from the paper during theprocess of perforating, and the cut-out disks l i are free to slidethrough the opening A4 to the outside of the perforator to drop 0n thedoor at the time the platen C assumes a vertical position. In case thecut-out disks accumulate or stick in the channel it is only necessary tointroduce a wire through the upper opening A4 to push the said disks outthrough the lower opening A4 to clear the channel of the disks.

The punch-bar B is formed at its ends withV springs B' and B2, of whichthe lower spring B is secured by screws E to the face of the bed-piece Aat the lower end thereof, and the upper spring B2 is formed on its underside with a V shaped longitudinally extendingA guide B3, adapted toengage a correspondingly-shaped guideway A5, formed on the upper end ofthe bed-piece A. Normally the spring B holds the punch-bar B in an openposition, as shown in Figs. 1 and 2, and when the platen C moves into aclosing position after making the impression on the paper lthen thepunch-bar is swung toward the bedpiece A-that is, into a closedposition.

On the under side of the punch-bar B are' secured the punches F,adaptedfto register with the apertures or perforations at the time theimpression takes place, and the punch-bar Bis swung into a closedposition, as above mentioned. On the under side of the punch-bar B isalso arrangeda paper-releasing device G, in the shape of alongitudinally-extending bar formed with an elongated slot G'- for thepassage of the punches F at the time the punch-bar moves into a closedposition. The ends of the bar for the paperreleasing device are formedwith o- 'sets G2, terminating in iianges G3 G4, having elongated slotsG5, through which extend the screws H H', screwing in the punch-bar B.The upper side of the bed-piece is preferably convex. p y

New it is evidentthat when the punch-bar B moves into a closed position,as above de scribed, then the bar of the paper-releasing device firstInovesrin contact with the face of the bed-piece A and is thenjlattenedout in an upward and downward direction, the flanges G4 G5, with theirelongatedslots, permitting such movement. As the paper extends over thelface of the bed-piece A it is evident that the bar of the releasing de-IOO I 2 l 'i .l 654,963

vice engages the paper at the closing of the plates and securely holdsthe paper in place ment with a correspondingguideway on the bedfpiece,asset forth.

. during the time'the punches'l perforate the paper at the final closingof the platen.

When the platen C swings into any open position after the impression ismade/then the punch-bar B swings into. an `open' position, owing totheresiliency of the spring B', thus 'V gages the paper, but not nntilthepunchesl?"` Bylth'e "arrangement vdescribedftherper` withdrawing thepunches F from the aperture A2 andthe paper. `"When Vthis takes place,vvthe bar of thepaper-releasing device Greff.

i' s i turns to its normal posi-tion, owing to theresiliency of its.spring ends, and'finally;disen' havecompletely left the paper.

,1 `forator'can bereadily attached to the endaoff Y Y the platenC,sothat thetym pan can be located in such` a manner as to bring theface of the tympan almost level with the top face ofthe bed-piece Atoallow of printing close tothe` perforations, if necessary, withoutdanger of.;

4tearing the paper.

When the punch-har B moves intoa closed position, the guide Ba passesinto theguideway A5, so as to insure a proper registration ofthe punchesFwith theperforations A2,

` and in order to prevent accidental longitudinal displacement of thepunch-bar during the perforating process I prefer to provide guide-pinsI, projecting Vfrom thelower ends. of the bed-piece A and the punch-barBand engagingcorresponding registering apertures inthe punch-bar as thebed-piece. 1

The device is very simple and durabley in construction, is not liable toget out of order, and insures proper perforationof the paper y withoutdangerof tearing the same.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- .1'. A perforator for printing-presses,comprising a bed-piece, and a punch-bar carrying punches for engagementWithperforations in tlie'said bed-piece, the punch-bar having its endsformed with springs, of which one is secured to the bed-piece to form afulcrum for the punch-bar, the other spring having alongitudinally-extending guide for engage` 2. A periorator, comprising abed-piece havingl perforations, a punch-bar having a spring connectionwith the said bed-piece, punches carried by said punch-bar and adaptjedto engage the said'perforations in the bedpiece, and .a slottedpaper-releasingbarnex- Y `tending on the under side of the saidpunchbarand havin g itsen/ds loosely secured there- "to, y substantiallyas shown andv described,

3'. A perforator, comprising 'av bedpiece "having perforations,ajfpn'nch.bar having a r`4spring "connection,with(the said*bed-piece, fpunches, carried -by the.` saidpunch-bar and ad'apted to :engage vthesardi pertorations in the bed-piece, and a slotted!papenreleasing barsecured to and havingguidedi'movement on the under side of thefsaidpunchbar, the said paper-releasin g kbar'entending normally beyondthe ends of the said punches, asset forth.l f

v LA perforator, comprising a punch-bar, and abed-piece havingperforations-,for engagement by the punches of the said punchbar, thesaid bed-piece b'eingformed at'its under side with a discharge-channelfor the cut-out portions of the paper, the said channel terminatingateach end vin an opening leading to the front face ofthe bed-piece, asset forth.

5. A perforator, comprising abed provided withperforations, alongitudinal channel on its underside, openings at its ends leading intosaid channel, and a recess at one end, a

punch-bar having a` spring connection with the bed and provided withpunches and with.

a guide at its free end to enter the recess of the end, and a slottedpaper-,releasing bar extending on the under side of the punchi bar, andhaving guided movement thereon, substantially as described.

In testimony whereof Ihave signed my name tothis specification in thepresence of two subscribing Witnesses'. i

t GUSTAVUS ALFRED EVANS.. Vitnesses:

A. M. JOHNSON, JOHN PATTERSON.

